[iblis432]

this may have already been said, i havn't been keeping up with this post, but here's some food for thought.

400 years ago (7 Jan 1610)
Italian scientist and astronomer Galileo Galilei discovered Jupiter’s four largest moons: Io, Europa, Ganymede and Callisto

100 years ago (13 Jan 1910)
The first public radio broadcast – an experimental live transmission from the Metropolitan Opera House, New York, USA, where several famous opera singers, including Enrico Caruso, were performing

For Galileo all I can think of is four scoring elements: Io, Europa, Ganymede and Callisto. But what these actually are and what you do with them is beyond me. something to do with rotation perhaps?

I dont know what you can do with the first radio broadcast, but it's an interesting scientific tidbit they might throw in.